Producing multicolored screens for photography



Feb. 20, 1923.

l. KITSEE PRODUCING MULTICOLORED SCREENS FOR PHOTOGRAPHY Filed` Jan. 17,1919 mnmnnnmnnn mDmmumnDmnD-u u l1 @l Patented Feb. 20, 1923. y

ISIDOR KITSEE, 0F PHILADELPHIA, PENNSYLVANIA.

vJPRODUCIINGr MULTCOLORED SCREENS FOR PHOTOGRAPHY.

Application led January 17, i919. Serial No. 271,709.

To all whom it may concern.'

Be it known that, I, IsIDoR Kirsnn, a citizen of the United States,residing at Philadelphia, inthe county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inProducing Multicolored Screens for Photography, 'of which the followingis a specification.

My invention. relates to an improvement in multi-colored screens.

rlhe object of my invention is to produce a multi-colored screendirectly on the celluloid out oi which the photographic blank- Amovingpicture film for example-is produced. l

lt is well understood that so 'tar nearly all lattempts to producemulti-colored screens for photographic blanks and more specially formoving picture -lilins require-d as the iirst step the surfacing of theCelluloid with a gelatine llm, so that the different colors may beapplied to the gelatine, as the application of the usual color solutionsto the Celluloid met with great diiiiculties.

l have discovered, that it is possible to produce color solutions,ailecting the celluloid in di'erent degrees and yet repelling each otherwhen applied to the Celluloid, in other words l have discovered it ispossible to apply: first, ligurations ci one color to the Celluloidproper and 'then wash the whole surface of the celluloidindiscriminately with a solution of a second color without interferencebetween two colors.

My invention may be practiced with a two-color three-color or four-colorscreen but l will'here describe my invention as applied to a'twoas wellas a four-color screen; it being understood that the colors selected asexamples, may be replaced by other colors, but the medium or solutioncarrying the colors should be strictly adhered to.

ln the accompanying drawing F l to 3 inclusive are plan viewsrepresenting the different steps in a two-color screen Figs l to 6inclusive are plan views representing the diiierent steps in afour-color screen.

l will now describe the :mode or method of procedure in obtaining therequired result, and in doing so I will refer to the different numbersas indicating the different parts of these figures, and l will heredescribe this I'ny invention as bewingapplied to moving picture films.But l will point out first the method and means of producing at leasttwo different color solutions, each of them desirably ail'ecting theCelluloid proper, but yet, not in'juriously ad'ecting eachl other.

have discovered, that alcohol is dissolved in an alcoholic solutioncontaining a dissolved, but suitable rosin or resin, the so coloredsolution, when applied to the surface of Celluloid adheres to the samestrongly does not spread or run and gives in fact a clear figuration ifapplied with the aid of a roller or other printing device,`or if appliedwith the aid of a brush and the inter-position of a suitable pattern.Great care has to be taken in the selection of such resin on account ofthe great number of requirements requisite for this purpose, such forinstance `as pliability even when drytrans parency, solubility and thelike, and l have found after a series of experiments that hardly anyother resin answers all purposes beside the resin known as balsarn, butof this I' genre only such balsams should be used, as

give a very clear and uncoloredsolution with alcohol, the Peru or theCanada balsain is well adapted for this, purpose.'\-ln my experimentsll' have in some instances,

lirst dissolved the color in the alcohol and thenv added the balsainallowing to stand till the balsam'was entirely dissolved. ln someinstances ll dissolved first the balsam then added the color. n p

The method and means of producing the second solution is simply todissolve the color in a liquid adapted to dissolve celluloid, in otherwords in a solvent of Celluloid andy ll have found that acetone is welladapted for my purpose; To this colored acetone l add a `inrfzdterialnot only capable ot restraining action of the dissolving prop-- erty oitthe acetone, but also .as-an added enough for all purposes, and- ,dgt

.60 if a dye soluble in i repelling medium towards the liistcolor whenabout dry. As such medium, ll have found that formaldehyde is wellsuited.

'lo produce therei-ore this second solution, l

dissolve the proper color in acetone and 'add then yformaldehyde indiluted state. liquids give clear imprints on the Celluloid, but whereasthe second solution impregnates the celluloid toa greater or lessextent, the first only colors and adheres to the Both ics

surface of the Celluloid, and l call the first solution the fB-solutionand the second the tl-solution.V lWherever therefore 'in thisapplication or claims following this apof celluloid.

containing the dissolved resin plication ll refer to the 1S-solution, lunderstand under this expression, the solution and whereever ll' referto the C-solution l understand the solution containing the solvent llnFig. 1, l indicates part of a moving picture film, la the perforationswith which the films are usually provided. lin Fig. 2, the figurationsof one color here green, are indicated by the numeral 2. rll `hesefigurations are here represented by dots, but their diameter is greatlyexaggerated so as to clearly bring out their coloration. 'These dotsmaybe applied to the ilm with the aid of suitable printing devices ormay simply be sprayed on with the aid of sprayers or so callednebulizers. For these figurations ll use the iB-solution, and afterdrying the figurations, ll cover the free spaces between thesefigurations with the second color, here red, as is clearly indicated bythe numeral 3 in Fig. 3. ln reality these spaces occupy a far smallerarea, but it is necessary for me to exaggerate these spacesso astoclearly illustrate the coloration of same. This second coloration isproduced with the aid of the C-solution and can be applied to the film,by simply going over the surface of the film with the aid of a sponge orother suitable contrivance dipped in this solution, for the reason thatthis solution will not injuriously aifect the first igurations. The filmis then washed so as to remove the surplus dye. When completed, the filmwill represent here the two colors green and red in required sequence.

l will now describe the production of the screen as illustrated in Figs.4 to 6.

lln Fig. d, the part of the ilm is indicated by l, its perforations byla, and the longitudinal lines here representing the color red, by thenumeral 4. rll`hese lines are produced withthe aid of the B-solution andmay be applied to the ilni with the aid of rollers or other suitableprinting devices.

n Fig. 5, which illustrates the addition of lateral'lines, 5 indicatesthese lateral lines, here blue. rlfhese lines produced with theiB-solution may also be applied with the aid of rollers or othersuitable printingv devices. Fig. 5, clearly illustrates these lines andthe spaces between these lines. llt has to be stated, that the laterallines as well as the longitudinal lines are spaced onel from the otherin a manner so that the spaces between each of the lateral lines as wellas the spaces between each of the longitudinal lines occupy an areaabout equal to the width of the lines themselves. All these linestogether will therefore represent a netfwork of lines, comprising herethe two colors red and blue. But as the blue lateral vlines cross thered longitudinal lines, the junction, comprising the two colors red andblue will represent the additional color, blue-violet, if the bluepredominates or redviolet if the red predominates, and this additio-nalcolor is here indicated by the numeral 6.

l After drying, the whole ilm is gone over, with the aid of a sponge orother suitable device, provided with the necessary color, here green,whereby the free spaces between the lines are impregnated with the greencolor. rllhis color is produced with the C- solution"7 and willtherefore not interfere with the coloration of the longitudinal orlateral lines. ln lFig. 6, which represents the finished screen thecoloration of the, formerly free or blank spaces between the lines areindicated by the numeral 7.

llt is obvious, that the colors enumerated may be supplanted by otherrequired colors.

llt is also obvious, that the surplus color of the tl-solution?7 shouldbe washed away.

Having Vnow described my invention, what ll claim as new and desire tosecure by Letters Patent is yllhe method of producing a multi-coloredscreen integral with a Celluloid moving picture film which consists inapplying to said film directly at least two tions, the first of saidsolutions having a dissolving action on the Celluloid of said film andthe second of said solutions adhering only'to the surface of saidCelluloid.

lln testimony whereof ll in the presence of two witnesses.

' lSlDOR Kll'lSElE.

Witnesses: l

y E. E. MILLER,

JOHN J. lttu'rrrnnronn.

different dye-soluatiilx my signature I

